Cita APA

Deswal, A., & Deswal, S. (2006). Basic course in Environmental studies.

Chicago Edition Citation

Deswal, A., i S. Deswal. Basic Course in Environmental Studies. Delhi, Dhanpat Rai & Co, 2006.

Cita MLA

Deswal, A., i S. Deswal. Basic Course in Environmental Studies. 2006.